8.1 HIPS has the highest impact strength while GPPS has the lowest impact strength. HIPS has the highest impact strength of 7651.086J/m² due to the addition of polybutadiene into GPPS during polymerisation imbues it with some of its properties. Thus, this increases the impact strength of the material.

According to the results, HIPS has an impact strength of 5602.69 J/m2 while GPPS has an impact strength of 3036.61 J/m2. This evidently proves the addition of polybutadiene increases the impact strength of HIPS.

During polymerisation, the addition of polybutadiene prevents the polymer chains from aligning. This means that there will a reduction of crystalline structures that can be formed. This results in a larger amorphous area, giving it the properties of an amorphous polymer. Since it is...

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GPPS | 3450.15 |
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Full Text: |
Copyright American Institute of Certified Public Accountants Oct 1999 |
[Headnote]
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